Monotrichous flagellum
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Monotrichous Bacteria | Monotrichous Flagellum Structure & Functions

Monotrichous Bacteria Flagellum

Bacteria can swim in order to move around in their natural environment and to locate other sources of food. One way that bacteria do this is by using a flagellum, which is a long, thin fiber that protrudes from the cell. The flagellum is always composed of one or more bundles of filaments, which take the place of a nucleus in prokaryotic cells.

A Monotrichous organism has uni-flagella, which has only one fin or one flagellum. These uni-flagella are ribbons or cilia. A Monotrichous flagellum is a flagellum fitted with a single whiplike flagellum. The single flagellum is longer and stiffer than the more common, two-flagellated flagella.

Monotrichous Flagellum Structure

Monotrichous flagella are single-celled cells that are found in the protist and bacteria. These single-celled organisms work together to break down food. The cells that have monotrichous flagella all use these long, whip-like, and hair-like strands of protoplasm to trap and eat food. Monotrichous flagella are not considered to be a higher form, and can be found in bacteria and protists

The Monotrichous flagella are found on some bacteria. Monotrichous flagella are basically just one long flagellum. The bacterial cells with one long flagellum have a whip-like structure which is why they’re called “monotrichous”. The Monotrichous flagella are used for locomotion just like the other flagella. The bacteria with Monotrichous flagella use the flagellum to twist through the liquid and propel themselves forward.

The Monotrichous flagellum is a filamentous organelle found in the flagellate. Their main function is to provide locomotion and propulsion for the organism. Flagella are made up of three different types of protein filaments. The first is the axoneme which is a complex system of microtubules and microfilament fibers.

These microtubules and microfilaments are nested within each other and are the main structure that keeps the flagellum together and functioning. The other two filament systems are the outer sheath filaments and inner bundle sheath. These filament systems help in providing the longitudinal movement of the flagellum through the cytoplasm of the cell (also known as axial movement).

Monotrichous flagella contain one main axonema surrounded by an outer sheath filament, and an inner bundle sheath . Flagella are usually seen as a kind of protrudent organelle that are found in the bacterial flagellates. The monotrichous flagellum is one type of flagellum that can provide the most amount of energy for movement.

Their structure enables them to have an axial movement, which means the flagellum moves from side to side instead of rotating. This trait can be found in many protists. Protists are both unicellular or multicellular organisms. There are two different types of protists, and both groups produce motility.

The protist flagella are made up of different types of proteins. Some protists have one monotrichous flagellum, but many others have multiple flagella that contain the same protein filaments and structure as the monotrichous flagellum.

Monotrichous Bacteria Examples

Monotrichous Bacteria Examples:  A single polar flagellum. for example; Xanthomonus citri, Vibrio cholerae, Pseudomonas aeruginosa, and Campylobacter spp. (polar flagella often in pairs to give a “seagull” appearance)

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